There is a big drill in the middle of the body of water and batman must be careful not to touch it. Next, create another block of ice using the freeze grenade. Shoot another batclaw to pull Batman towards the bridge, then jump onto the bridge. The current will carry you the right direction, but if you want to move faster then fire your batclaw on the ring to pull yourself into that direction. Throw a freeze grenade into the water, then hop onto the ice block. You will now reach a river of steaming water. Follow the onscreen prompts to quickfire the freeze blast. Target enemies with the freeze blast to paralyze them momentarily. Once you enter the steel mill, there will be some enemies inside. After defeating both the snipers and the thugs on the ground, enter through the door. Do NOT attempt to fight on the ground until you have taken out all the snipers. You have to take care of the snipers first, then defeat the goons on the ground.
However it is heavily guarded by armed thugs and by snipers above it. She will tell you that the only other way in is via the heat exchanges on the south side of the building. Contact oracle and ask her to find you a route into the steel mill. After getting to the steel mill and trying to go in through the tall chimney which you used last time, you realize you cant go in through there since the heat the furnace is generating is too powerful.
